speak in tongues vs speak

speak in tongues and speak both are verbs.

Word	Noun	Adjective	Verb	Adverb
speak in tongues	No	No	Yes	No
speak	No	No	Yes	No

As verbs, speak is a hypernym of speak in tongues; that is, speak is a word with a broader meaning than speak in tongues:

Other hypernyms of speak in tongues include mouth, talk, utter, verbalise, verbalize.

speak in tongues (verb)	speak (verb)
speak unintelligibly in or as if in religious ecstasy	express in speech
	exchange thoughts; talk with
	use language
	give a speech to
	make a characteristic or natural sound